Two individuals authorized to serve as a l
问题:
Two individuals authorized to serve as a lifeboatman must be assigned to any lifeboat that has a capacity of more than().
A.10 persons
B.20 persons
C.30 persons
D.40 persons
Two individuals authorized to serve as a lifeboatman must be assigned to any lifeboat that has a capacity of more than().
A.10 persons
B.20 persons
C.30 persons
D.40 persons